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SERVICE MANUAL

HAMAMATSU, JAPAN

Copyright (c) Yamaha Corporation. All rights reserved. PDF

&

’08.03

SPECIFICATIONS ......................................................................3
PANEL LAYOUT .........................................................................4
CIRCUIT BOARD LAYOUT & WIRING ......................................6
DISASSEMBLY PROCEDURE ..................................................8
LSI PIN DESCRIPTION ............................................................14
IC BLOCK DIAGRAM ...............................................................16
CIRCUIT BOARDS ...................................................................17
TEST PROGRAM .....................................................................26
INITIALIZATION .......................................................................29
MIDI IMPLEMENTATION CHART ............................................30
MIDI DATA FORMAT ................................................................31
PARTS LIST
BLOCK DIAGRAM
OVERALL CIRCUIT DIAGRAM

CONTENTS

KB-180

SKB-180

DIGITAL KEYBOARD

PK

001800

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2
3
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Содержание KB-180

Страница 1: ...ANEL LAYOUT 4 CIRCUIT BOARD LAYOUT WIRING 6 DISASSEMBLY PROCEDURE 8 LSI PIN DESCRIPTION 14 IC BLOCK DIAGRAM 16 CIRCUIT BOARDS 17 TEST PROGRAM 26 INITIALIZATION 29 MIDI IMPLEMENTATION CHART 30 MIDI DATA FORMAT 31 PARTS LIST BLOCK DIAGRAM OVERALL CIRCUIT DIAGRAM CONTENTS KB 180 SKB 180 DIGITAL KEYBOARD PK 001800 ...

Страница 2: ...rch engineering and service departments of Yamaha are continually striving to improve Yamaha products Modifications are therefore inevitable and changes in specification are subject to change without notice or obligation to retrofit Should any discrepancy appear to exist please contact the distributor s Service Division WARNING Static discharges can destroy expensive components Discharge any stati...

Страница 3: ...3 KB 180 SKB 180 SPECIFICATIONS ...

Страница 4: ...KB 180 SKB 180 4 4 0 2 6 1 Front Panel A A PANEL LAYOUT ...

Страница 5: ...5 KB 180 SKB 180 RAND0NO RAND0NO 2 Rear Panel A A ...

Страница 6: ... Lower case assembly Upper case side Upper case side PN 4 6 PB AMJK 6 6 PN 3 6 PNL PNL PN 2 6 PNR PNR DMLCD AMJK 1 6 AMJK 4 6 AM AM AM AMJK 5 6 MIDI AMJK 2 6 Speaker R Upper case assembly Back light assembly Upper case assembly Speaker L B 8 2 1 2 PN 1 6 ...

Страница 7: ...MLCD CN101 1 4 13P L 120 0 WH551 WG33260 VR3 AM CN551 3 4 AM CN552 3 4 5P L 230 1 MIDI circuit board WH853 WG33110 JK MIDI CN853 3 4 DMLCD CN803 1 4 9P L 90 2 PB circuit board WH855 WG33160 PB3 PB CN855 3 4 PNL CN777 1 4 3P L 100 3 PNR circuit board WH771 WG33210 PN5 PNR CN771 3 4 DMLCD CN701 1 4 16P L 170 4 WH772 WG33230 PN7 PNR CN772 3 4 PNR CN773 3 4 7P L 170 5 PNL circuit board WH774 WG33220 P...

Страница 8: ...t 2 minutes 1 1 Remove the battery cover assembly Fig 1 1 2 Remove the nine 9 screws marked 320 and three 3 screws marked 330 The lower case assembly can then be removed Fig 1 320 Bind Head Tapping Screw B 3 0X12 MFZN2W3 WE987400 330 Bind Head Tapping Screw B 3 0X30 MFZN2W3 WF491000 Fig 1 2 Spring Terminal Time required About 2 minutes 2 1 Remove the lower case assembly See procedure 1 2 2 Remove ...

Страница 9: ...d 210A Fig 6 3 3 Remove the lower case assembly See procedure 1 3 4 Remove the seven 7 screws marked 210B three 3 screws marked 210C and two 2 screws marked 210D The AM circuit board can then be removed Fig 6 3 5 Pull out the push knob from the AM circuit board Fig 5 4 LCD Unit Time required About 3 minutes 4 1 Remove the lower case assembly See procedure 1 4 2 Remove the two 2 screws marked 210E ...

Страница 10: ...When attaching the rubber connector to the LCD panel set the conductor side to face in ward Fig 8 When installing the DMLCD circuit board tight en the screws 1 through 8 in numerical order as shown in Fig 9 Fig 9 If the DMLCD circuit board is replaced execute the Factory Set in the test program 6 MIDI Circuit Board Time required About 6 minutes 6 1 Remove the lower case assembly See procedure 1 6 ...

Страница 11: ...e the SP grille L Fig 1 Fig 6 The speaker grille R can be removed in the same manner 10 PB Circuit Board and Wheel Assembly Time required About 2 minutes 10 1 Remove the lower case assembly See procedure 1 10 2 Remove the two 2 screws marked 210N and remove the PB circuit board with the wheel assembly attached Fig 10 10 3 Pull out the wheel assembly from the PB circuit board Fig 11 11 Speakers Tim...

Страница 12: ...ew marked 200C unhook as described in Procedure 12 2 1 and pull out toward you Fig 12 12 3 Rubber Contacts 12 3 1 Remove the white and black keys corresponding to the rubber contacts to be removed See Fig 12 and Procedure 12 2 12 3 2 Remove the rubber contacts Photo 2 Fig 13 12 4 Circuit Board 61L 12 4 1 Remove the white and black keys from C1 to B3 See Fig 12 and Procedure 12 2 12 4 2 Remove the ...

Страница 13: ...ews 1 through 8 in numerical order as shown in the figure for circuit board 61H in Fig 14 Fig 14 When the black keys from C 2 to A 2 from C 3 to A 3 or from C 5 to A 5 are replaced wrap the nonwoven fabric cloth WH347400 marked 380 around the black key ribs at the screw mounting portions marked 330 de scribed in Procedure 1 Fig 15 Fig 14 Fig 15 ...

Страница 14: ... I I I I O I O S22 S21 S20 S19 S18 S17 S16 S15 S14 S13 S12 S11 S10 S9 S8 S7 S6 S5 S4 S3 S2 S1 GND OSC1 OSC2 V1 V2 V3 V4 V5 L CP Vdd DF DO RS R W E DB0 DB1 NAME Segment signal output for LCD driving Ground Oscillator Oscillator Power supply Data latch clock Data shift clock Power supply 5 V Altamated signal for LCD driver output Display data interface Read write Enable Data interface Data interface...

Страница 15: ...Clock output Port G Ground Power supply 2 5 V Power supply 3 3 V I O port A Ground I O port B 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 Vss IOVDD LBN LWRN PF6 UBN UWRN PF7 RDN PF4 MD00 MD08 MD01 MD09 MD02 MD10 MD03 Vss MD...

Страница 16: ...7300A00 Dual Operational Amplifier DMLCD IC502 1 2 3 1A 1Y 4 2A 5 2B 6 2Y 7 GND 1B 14 13 12 Vcc 4A 11 4Y 10 3B 9 3A 8 3Y 4B 1 2 3 4 5 6 7 A A Select Enable Output Output B B C C G2A G2A G2B G2B G1 G1 Y7 Y7 Y5 Y4 Y3 Y2 Y1 Y0 Y6 16 15 14 13 12 11 10 Vcc YO Y1 Y2 Y3 Y4 Y5 8 GND 9 Y6 1 2 3 4 V 8 7 6 5 Output 1 V Input 1 VEE VCC Output 2 Input 2 Input 2 Input 1 OUT2 OUT2 RIPPLE FILTER BIAS CIRCUIT STAN...

Страница 17: ...rcuit Board X7174D0 18 19 PNL PN 2 6 Circuit Board X7177C0 20 21 PNL PN 4 6 Circuit Board X7177C0 20 21 PNR PN 1 6 Circuit Board X7177C0 22 23 PNR PN 3 6 Circuit Board X7177C0 22 23 61H Circuit Board X2335C0 25 61L Circuit Board X2336B0 25 Note See parts list for details of circuit board component parts to DMLCD CN803 to Speaker R not installed MIDI SUSTAIN IN OUT MIDI AMJK 2 6 Circuit Board Compo...

Страница 18: ...180 18 DMLCD Circuit Board Component side to MIDI CN853 to AM AMJK 1 6 CN155 to PNR PN 1 6 CN771 not installed not installed to PNL PN 2 6 CN774 to 61L CN5 to 61H CN1 to 61H CN2 not installed DMLCD 2NA WG23540 1 7 ...

Страница 19: ...19 KB 180 SKB 180 Pattern side DMLCD Circuit Board DMLCD 2NA WG23540 1 7 ...

Страница 20: ... SKB 180 20 to DMLCD CN703 PITCH BEND PORTAMENTO Component side PNL PN 2 6 Circuit Board PNL PN 4 6 Circuit Board PB AMJK 6 6 Circuit Board Component side Component side PB 2NA WG23590 1 5 PNL 2NA WG23610 1 2 ...

Страница 21: ...21 KB 180 SKB 180 PB 2NA WG23590 1 5 PNL 2NA WG23610 1 2 PNL PN 2 6 Circuit Board Pattern side PNL PN 4 6 Circuit Board Pattern side ...

Страница 22: ...KB 180 SKB 180 22 to DMLCD CN701 Component side PNR PN 1 6 Circuit Board Scale 90 100 PNR 2NA WG23610 1 2 Component side PNR PN 3 6 Circuit Board ...

Страница 23: ...23 KB 180 SKB 180 Pattern side PNR 2NA WG23610 1 2 PNR PN 1 6 Circuit Board Scale 90 100 PNR PN 3 6 Circuit Board Pattern side ...

Страница 24: ...N101 not installed to Battery to Speaker L DC IN 12V PHONES OUTPUT EXPRESSION MASTER VOLUME STANDBY ON AM AMJK 1 6 Circuit Board Component side Component side Component side AM AMJK 4 6 Circuit Board AM AMJK 5 6 Circuit Board AM 2NA WG23590 1 5 ...

Страница 25: ...25 KB 180 SKB 180 61H Circuit Board to DMLCD CN401 to 61L CN4 to DMLCD CN403 A A A A Component side B B to DMLCD CN402 to 61H CN3 B B 61L Circuit Board Component side 61H 2NAKB V869540 61L 2NAKB V869520 ...

Страница 26: ...iptions judging conditions etc 1 Version 001 Displays version of the ROM Prog is displayed on the LCD Version 2 Rom Chk1 002 Checks the ROM connected to the CPU bus Make sure that Rom OK is displayed on the LCD 3 Ram Chk1 003 Checks the RAM connected to the CPU bus Make sure that Ram OK is displayed on the LCD 6 FRomChk1 006 Checks the FROM connected to the CPU bus Make sure that FRom OK is displa...

Страница 27: ... LCD 36 PB Chk 036 C3 is played when the PITCH BEND wheel is turned toward you to the minimum position DW and C4 is played when the wheel is turned away from you to the maximum position UP Make sure that PB OK is displayed on the LCD 37 MIDI Chk 037 Connect the MIDI IN terminal and MIDI OUT terminal with a MIDI cable and then execute the test Make sure that C4 is played and that MIDI OK is display...

Страница 28: ...MBLE ENSEMBLE F 4 32 PIANO PIANO G4 33 HARPSI HARPSI G 4 34 C ORGAN C ORGAN A4 35 ACCORD ACCORD A 4 Turn SW Name LCD Display Note Number 36 VIBES VIBES B4 37 STRINGS1 STRINGS1 C5 38 VIOLIN VIOLIN C 5 39 FLUTE FLUTE D5 40 CLARINET CLARINET D 5 41 OBOE OBOE E5 42 TRUMPET TRUMPET F5 43 HORN HORN F 5 44 BRASS BRASS G5 45 HAHP HAHP G 5 46 SYN LEAD SYN LEAD A5 47 ACO GTR ACO GTR A 5 48 BASS BASS B5 49 S...

Страница 29: ...29 KB 180 SKB 180 INITIALIZATION D LASH ...

Страница 30: ... n o C d n u o S o 1 x 4 7 1 7 e g n a h C h t p e D t c e f f E o o 3 9 1 9 c e D c n I N P R o 1 x 7 9 6 9 o o 1 0 1 0 0 1 RPN LSB MSB 7 2 1 0 o 7 2 1 0 o g o r P Change True o o e v i s u l c x E m e t s y S x x s o P g n o S x x l e S g n o S n o m m o C x x e n u T o o k c o l C m e t s y S o o s d n a m m o C e m i T l a e R 7 2 1 6 2 1 0 2 1 o x F F O d n u o S l l A x u A Reset All Cntrls ...

Страница 31: ...31 KB 180 SKB 180 MIDI DATA FORMAT ...

Страница 32: ...es for each unit The parts with in PART NO are not available as spare parts This mark in the REMARKS column means these parts are interchangeable The second letter of the shaded part number is O not zero The second letter of the shaded part number is I not one PARTS LIST CONTENTS OVERALL ASSEMBLY 2 KEYBOARD ASSEMBLY 5 LOWER CASE ASSEMBLY 6 ELECTRICAL PARTS 8 13 DIGITAL KEYBOARD ...

Страница 33: ...0 L110 L100 L80 70 250 180 160 190 260 210 270 210 210 270 270 270 270 370 110 200 210 210 210 380 370 370 270 210 140 130 280 210 210 210 210 210 290 360 350 150 120 150 90 U40 U40 U40 U40 U40 U40 U30 U10 U40 U20 300 Lower case assembly See page 6 LCD Unit Battery cover assembly 280a 280b Wheel assembly Upper case assembly 180 270 250 250 190 ...

Страница 34: ... Wheel ホイール 03 280b VT440100 Spring ホイールバネ 03 290 WM930200 Circuit Board PB ＰＢシート 300 TX920280 Grease G 31KA 50g グリス VE96850 38 310 Lower Case Assembly 下ケースＡｓｓｙ WG07410 320 WE987400 Bind Head Tapping Screw B 3 0X12 MFZN2W3 ＢタイトＢＩＮＤ 9 01 330 WF491000 Bind Head Tapping Screw B 3 0X30 MFZN2W3 ＢタイトＢＩＮＤ 3 01 340 V9259700 Battery Cover Assembly PT バッテリーカバーＡｓｓｙ 03 340a...

Страница 35: ...4 KB 180 SKB 180 ACCESSORIES 付属品 WG073800 Music Rest 譜面板 WF324900 AC Adaptor PA 5D CHN ＡＣアダプタ 08 REF NO PART NO DESCRIPTION 部品名 REMARKS QTY RANK New Parts RANK Japan only ...

Страница 36: ... OCT 2M 接点ゴム１６Ｎ２Ｍ C1 B1 C2 B2 C3 B3 C4 B4 4 04 60 V7477400 Rubber Contact 16N 2M 13K 2M 接点ゴム１６Ｎ２Ｍ C5 C6 04 151 V8695300 Circuit Board 61L シート６１Ｌ 04 152 V8695500 Circuit Board 61H シート６１Ｈ 04 155 VZ302900 Felt U White フェルトＵ 02 160 VZ303000 Felt L White フェルトＬ 02 170 V7100100 Rubber Support 16N サポートラバー 03 175 V8696200 Connector Assembly 16N 2M C61 L 210 中継束線 0...

Страница 37: ...100 190 170 200 200 210 220 60 60 170 170 180 200 200 210 220 110 130 170 170 120 120 10 20 L60 L30 L20 L30 L20 L30 L20 L70 L60 L10 L40 Keyboard assembly See page 5 Speaker box R assembly Speaker box L assembly Lower case sub assembly 230 170 170 170 170 ...

Страница 38: ...170 VA126100 Adhesive Tape 12X50 粘着テープ 11 01 170 Adhesive Tape MY7 12X50 ＰＥＴテープ WB79380 11 180 V8749500 Speaker Box R Assembly RIGHT ＳＰボックスＲＡｓｓｙ 05 190 V8749400 Speaker Box L Assembly LEFT ＳＰボックスＬＡｓｓｙ 05 200 WE974500 Bind Head Tapping Screw B 4 0X10 MFZN2W3 ＢタイトＢＩＮＤ 40 01 210 X5163A00 Speaker 12 0cm 4ohm 6W スピーカ 2 06 220 Connector Assembly SPL 2P ＳＰＬ束線 WG32410 2 230 VN1954...

Страница 39: ...RM セラコン２Ｂ天津製 C557 FG612470 Ceramic Capacitor B 470P 50V K RX TP セラコンＢ 01 C557 VR025800 Ceramic Capacitor 2B 470P 63V K FORMING セラコン２Ｂ天津製 C558 FG612470 Ceramic Capacitor B 470P 50V K RX TP セラコンＢ 01 C558 VR025800 Ceramic Capacitor 2B 470P 63V K FORMING セラコン２Ｂ天津製 C560 UR838100 Electrolytic Cap 100 00 16 0V RX TP ケミコン 01 C560 V3508500 Electrolytic Cap 100 00 16 0V TP...

Страница 40: ...IN Connector 5P HDC 052S 01 ＤＩＮコネクタ 01 JK853 VJ107200 DIN Connector JACK5P YKF51 5050N ＤＩＮコネクタ MIDI IN 01 JK853 VZ085800 DIN Connector 5P HDC 052S 01 ＤＩＮコネクタ 01 JK856 VM467200 PIN Connector JACK LCZ3 4 1 ピンコネクタ天津製 EXPRESSION K551 Heat Sink 放熱板 WF87700 L555 GE300670 Ferrite Bead BL02RN2R1P1A TATET フェライトビーズ 02 L851 V7634400 Coil BD FL20 03 20uH コイル２０ＵＨ L851 V...

Страница 41: ...PB3 3P L 100 ＰＢ３束線 WG33160 WN046200 Circuit Board DMLCD ＤＭＬＣＤシート WN04610 X7174D0 C101 US145100 Ceramic Capacitor F chip 0 1000 25V Z RECT チップセラＦ 01 C102 US145100 Ceramic Capacitor F chip 0 1000 25V Z RECT チップセラＦ 01 C103 UF037100 Electrolytic Cap chip 10 16V チップケミコン 01 C104 UF037100 Electrolytic Cap chip 10 16V チップケミコン 01 C105 US145100 Ceramic Capacitor F chip 0 100...

Страница 42: ...808 US145100 Ceramic Capacitor F chip 0 1000 25V Z RECT チップセラＦ 01 C809 UF028100 Electrolytic Cap chip 100 10V チップケミコン 01 C810 US145100 Ceramic Capacitor F chip 0 1000 25V Z RECT チップセラＦ 01 C812 US062100 Ceramic Capacitor SL chip 100P 50V J RECT チップセラＳＬ 01 C901 US145100 Ceramic Capacitor F chip 0 1000 25V Z RECT チップセラＦ 01 950 US145100 Ceramic Capacitor F chip 0 1000 25V Z ...

Страница 43: ... RD356100 Carbon Resistor chip 1 0K 63M J RECT チップ抵抗 01 R723 RD357470 Carbon Resistor chip 47 0K 63M J RECT チップ抵抗 01 R724 RD357470 Carbon Resistor chip 47 0K 63M J RECT チップ抵抗 01 R725 RD350000 Carbon Resistor chip 0 63M J RECT チップ抵抗 01 R727 RD350000 Carbon Resistor chip 0 63M J RECT チップ抵抗 01 732 RD350000 Carbon Resistor chip 0 63M J RECT チップ抵抗 01 R746 RD355100 Carbon Resisto...

Страница 44: ...抗 R755 HF454680 Carbon Resistor 68 0 1 4 J AX TP カーボン抵抗 01 R755 V2547800 Carbon Resistor 68 0 1 6J 26TP カーボン抵抗 WH771 Connector Assembly PN5 16P L 170 ＰＮ５束線 WG33210 WH772 Connector Assembly PN7 7P L 170 ＰＮ７束線 WG33230 WH774 Connector Assembly PN6 16P L 200 ＰＮ６束線 WG33220 WH775 Connector Assembly PN8 6P L 320 ＰＮ８束線 WG33240 V8695500 Circuit Board 61H シート６１Ｈ V869540 X2335C...

Страница 45: ... 6V 50ms B01 B07 B07 B11 SW37 61 SW1 36 PC0 5 PD0 5 PC0 5 PD0 5 TOUCH RESPONSE Keybord 61KEY 16N SD0 PC7 SDI IC402 16P IC301 128P IC801 10P IC501 16P IC601 80P TR705 TR701 704 IC502 8P IC103 3P IC102 3P IC101 3P IC151 3P LD751 LD752 SW771 VR751 SW746 770 LD753 IC551 14P VR551 IC207 14P IC202 56P IC206 48P IC204 44P JK551 JK151 JK852 IC851 TR851 852 JK851 JK853 JK856 SW151 IC401 16P DECODER CPU DEC...

Страница 46: ...UT 1 3 2 OUT R1 R2 GND IN IN GND OUT RH5RZ50CA T1 F X6959A00 REGULATOR 5V DMLCD IC101 1 2 3 1 GND 2 INPUT 3 OUTPUT 1 2 3 3 OUTPUT 2 GND 1 INPUT BA60BC0T X6980A00 REGULATOR 6V AM IC151 DMLCD xx STANDBY ON REGULATOR 5V REGULATOR 6V PHOTO COUPLER POWER AMP 6W 6W P2 ROM 128M PROG WAVE REGULATOR 3 3V REGULATOR 2 5V XX DRAM 4M OR CPU SWL01T SYSTEM RESET FLASH ROM 4M DECODER DECODER OP AMP DAC ADC CPU US...

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